Wilo Sub TWI 4 Serie Notice De Montage Et De Mise En Service page 33

• Emerged: -
4.5 Type code
Example: Wilo-Sub TWI 4-0207-x
• TWI = submersible motor pump made of stainless steel
• 4 = diameter of the hydraulics in inches
• 02 = nominal flow volume in m³/h
• 10 = number of stages of the hydraulic system
1
• x = version:
• without = standard pump
• QC = with QuickConnect cable connection
2
• x = series generation
4.6 Scope of delivery
Standard pump:
• Unit with 1.5 or 2.5 m cable (from motor upper edge)
• Installation and operation manual
• AC version with start-up device, thermic motor pro-
tection device, on/off switches and free cable ends
• DC version with free cable ends
QC version:
• Unit with 1.75 m QuickConnect cable with free cable
ends
• Installation and operation manual
4.7 Accessories (optionally available)
• Cooling jacket
• Switching devices
• Level sensors
• QuickConnect cable sets
• Motor cable kits
• Encapsulating set for motor cable extension
5 Installation
In order to prevent damage to the product or serious
injury during installation, the following points must be
observed:
• Installation work – assembly and installation of the
machine – may only be carried out by qualified per-
sons. The safety instructions must be followed at all
times.
• The machine must be inspected for transport damage
before carrying out any installation work.
5.1 General
In cases where pumping is made through longer dis-
charge pipes (especially on long ascents), attention is
drawn to pressure surges.
Pressure surges can lead to destruction of the unit/
system and noisy operation resulting from valve
knocking. This can be avoided by taking appropriate
measures (e.g. non-return valves with adjustable clo-
sure time or laying the discharge pipe in a special way).
After pumping water containing lime, flush out the
product with clean water in order to prevent encrusta-
tion and subsequent breakdowns.
If you are using level control, make sure that the mini-
mum water coverage is present. Air pockets in the
Installation and operating instructions Wilo-Sub TWI 4..., TWI 4...-QC
1 2
-x
hydraulic housing or pipeline system must be avoided
at all costs and must be removed using a suitable ven-
tilation system. Protect the product from frost.
5.2 Types of installation
• Vertical stationary installation, submerged
• Horizontal stationary installation, submerged - only to
be used together with a cooling jacket!
5.3 The operating area
The operating area must be clean, free of coarse solids,
dry, frost-free and, if necessary, decontaminated. It
must also be suitable for the respective product. The
water supply must be sufficient for the maximum flow
rate on the unit so that dry running and/or air entry is
prevented.
When installed in wells or bore holes, ensure that the
unit does not come into contact with the walls. There-
fore, ensure that the outer diameter of the submers-
ible motor pump is always smaller than the inner
diameter of the well or bore hole.
When working in containers, wells or bore holes, a sec-
ond person must always be present for safety reasons.
If there is danger of poisonous or asphyxiating gases
forming, the necessary countermeasures must be
taken!
It must be ensured that hoisting gear can be fitted
without any trouble, since this is required for assembly
and removal of the product. It must be possible to
reach the product safely in its operating and storage
locations using the hoisting gear. The machine must be
positioned on a firm foundation. For transporting the
product, the load-carrying equipment must be secured
to the appropriate fastening points.
Electric power cables must be laid out in such a way
that safe operation and trouble-free assembly/disman-
tling are possible at all times. The product must never
be carried or dragged by the power supply cable. When
using switching devices, the corresponding protection
class must be observed. Switching devices must always
be mounted in such a way that they are protected from
flooding.
The structural components and foundations must be of
sufficient stability in order to allow the product to be
anchored securely and functionally. The operator or the
supplier is responsible for the provision of the founda-
tions and their suitability in terms of dimensions, sta-
bility and strength!
Use guide and deflector plates for the pumped liquid
intake. If the water jet reaches the surface of the
water, air will be introduced into the pumped liquid.
This will lead to unfavorable current and pumping con-
ditions for the unit. As a result of cavitation, the prod-
uct does not run smoothly and is subjected to
increased wear.
English
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